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lis3: add free-fall/wakeup function via platform_data

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This offers a way for platforms to define flags and thresholds for the
free-fall/wakeup functions of the lis302d chips.

More registers needed to be seperated as they are specific to the

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Daniel Mack 2009-09-21 17:04:43 -07:00 committed by Linus Torvalds
parent 0ec48915e8
commit 8873c33483
3 changed files with 36 additions and 6 deletions
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9
drivers/hwmon/lis3lv02d.c
View File

@ -454,6 +454,15 @@ int lis3lv02d_init_device(struct lis3lv02d *dev)
(p->click_thresh_y << 4));
}
if (p->wakeup_flags && (dev->whoami == LIS_SINGLE_ID)) {
dev->write(dev, FF_WU_CFG_1, p->wakeup_flags);
dev->write(dev, FF_WU_THS_1, p->wakeup_thresh & 0x7f);
/* default to 2.5ms for now */
dev->write(dev, FF_WU_DURATION_1, 1);
/* enable high pass filter for both free-fall units */
dev->write(dev, CTRL_REG2, HP_FF_WU1 | HP_FF_WU2);
}
if (p->irq_cfg)
dev->write(dev, CTRL_REG3, p->irq_cfg);
}

24
drivers/hwmon/lis3lv02d.h
View File

@ -58,15 +58,17 @@ enum lis3_reg {
OUTZ_L = 0x2C,
OUTZ_H = 0x2D,
OUTZ = 0x2D,
FF_WU_CFG = 0x30,
FF_WU_SRC = 0x31,
FF_WU_ACK = 0x32,
FF_WU_THS_L = 0x34,
FF_WU_THS_H = 0x35,
FF_WU_DURATION = 0x36,
};
enum lis302d_reg {
FF_WU_CFG_1 = 0x30,
FF_WU_SRC_1 = 0x31,
FF_WU_THS_1 = 0x32,
FF_WU_DURATION_1 = 0x33,
FF_WU_CFG_2 = 0x34,
FF_WU_SRC_2 = 0x35,
FF_WU_THS_2 = 0x36,
FF_WU_DURATION_2 = 0x37,
CLICK_CFG = 0x38,
CLICK_SRC = 0x39,
CLICK_THSY_X = 0x3B,
@ -77,6 +79,12 @@ enum lis302d_reg {
};
enum lis3lv02d_reg {
FF_WU_CFG = 0x30,
FF_WU_SRC = 0x31,
FF_WU_ACK = 0x32,
FF_WU_THS_L = 0x34,
FF_WU_THS_H = 0x35,
FF_WU_DURATION = 0x36,
DD_CFG = 0x38,
DD_SRC = 0x39,
DD_ACK = 0x3A,
@ -107,6 +115,10 @@ enum lis3lv02d_ctrl2 {
CTRL2_FS = 0x80, /* Full Scale selection */
};
enum lis302d_ctrl2 {
HP_FF_WU2 = 0x08,
HP_FF_WU1 = 0x04,
};
enum lis3lv02d_ctrl3 {
CTRL3_CFS0 = 0x01,

9
include/linux/lis3lv02d.h
View File

@ -34,6 +34,15 @@ struct lis3lv02d_platform_data {
#define LIS3_IRQ_OPEN_DRAIN (1 << 6)
#define LIS3_IRQ_ACTIVE_LOW (1 << 7)
unsigned char irq_cfg;
#define LIS3_WAKEUP_X_LO (1 << 0)
#define LIS3_WAKEUP_X_HI (1 << 1)
#define LIS3_WAKEUP_Y_LO (1 << 2)
#define LIS3_WAKEUP_Y_HI (1 << 3)
#define LIS3_WAKEUP_Z_LO (1 << 4)
#define LIS3_WAKEUP_Z_HI (1 << 5)
unsigned char wakeup_flags;
unsigned char wakeup_thresh;
};
#endif /* __LIS3LV02D_H_ */